control: B-D on patch

Quoth ob-applypatches:

    ob-applypatches: Applying patch "01_properly-support-shared-library.patch"...
    patching file Makefile
    ob-applypatches: Applying patch "02_bzip2recover-race-open-output.patch"...
    patching file bzip2recover.c
    Possibly reversed hunk 2 at 515
    Hunk 2 FAILED 269/271.
            name[n-1] == '2');
     }

    +/*---------------------------------------------*/
    +/* Open an output file safely with O_EXCL and good permissions */
    +FILE* fopen_output( Char* name, const char* mode )
    +{
    +  FILE *fp;
    +  int   fh;
    +
    +  fh = open(name, O_WRONLY|O_CREAT|O_EXCL, 0600);
    +  if (fh == -1) return NULL;
    +  fp = fdopen(fh, mode);
    +  if (fp == NULL) close(fh);
    +  return fp;
    +}

     /*---------------------------------------------------*/
     /*---                                             ---*/
    ob-applypatches: Error: Can't apply patch "02_bzip2recover-race-open-output.patch"

1 files changed, 1 insertions, 1 deletions

diff --git a/control b/control
index a2a850c..69ec4b3 100644
--- a/control
+++ b/control
@@ -1,3 +1,3 @@
 Maintainer: Patrick McDermott <patrick.mcdermott@libiquity.com>
-Build-Depends: opkbuild (>= 3.0.0-beta7), opkhelper-3.0 (>= 3.1.2)
+Build-Depends: opkbuild (>= 3.0.0-beta7), patch, opkhelper-3.0 (>= 3.1.2)
 Homepage: https://sourceware.org/bzip2/